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<TITLE>JavaScript Source Code 3000:  Password Protection:  Character Encoder</TITLE>
<META HTTP-EQUIV="JavaScript Source Code 3000" CONTENT = "no-cache">
<META NAME="date" CONTENT="2000-09-09">
<META NAME="channel" CONTENT="Web Developer">
<META NAME="author" CONTENT="Mike McGrath (mike_mcgrath@lineone.net)">
<META NAME="section" CONTENT="Password Protection">
<META NAME="description" CONTENT="Encrypts a string by converting each character to it's ASCII key code.  Supports two-way encryption - from a string to the numeric code, or from the numeric code back to the string.  You can, for example, send the encrypted code to a friend and have them decode it with this script.  Lots more uses, use your imagination!">

<SCRIPT LANGUAGE="JavaScript">
<!-- Original:  Mike McGrath (mike_mcgrath@lineone.net) -->
<!-- Web Site:  http://website.lineone.net/~mike_mcgrath/ -->




<!-- Begin
var str_in;
var str_out = ""; 
var num_in;
var num_out = "";
var e = "Enter Text!";

function str_to_num(form) {
num_out = "";
if(form.input.value == "") alert(e);
else {
str_in = escape(form.input.value);
for(i = 0; i < str_in.length; i++) {
num_out += str_in.charCodeAt(i) - 23;
}
form.output.value = num_out;
form.input.value = "";
   }
}

function num_to_str(form) {
str_out = "";
if(form.output.value == "") alert(e)
else {
num_out = form.output.value;  
for(i = 0; i < num_out.length; i += 2) {
num_in = parseInt(num_out.substr(i,[2])) + 23;
num_in = unescape('%' + num_in.toString(16));
str_out += num_in;
}
form.input.value = unescape(str_out);
form.output.value = "";
   }
}
//  End -->
</script>
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<A HREF="../index.htm" /" TARGET="_top"><FONT COLOR="#0000FF"><b>Home</b></font></A>
<img src="../img/arrow.gif" /img/arrow.gif" height=13 width=7 border=0 alt="}">
<A HREF="index.htm" /passwords/"><font color="#FF0000"><b>Password Protection</b></font></A>
<img src="../img/arrow.gif" /img/arrow.gif" height=13 width=7 border=0 alt="}">
<FONT COLOR="#006666"><b>Character Encoder</b></font></font>
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<table BORDER=0 WIDTH=486 CELLPADDING=3 CELLSPACING=0>
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<!-- Description --><!--content_start-->
Encrypts a string by converting each character to it's ASCII key code.  Supports two-way encryption - from a string to the numeric code, or from the numeric code back to the string.  You can, for example, send the encrypted code to a friend and have them decode it with this script.  Lots more uses, use your imagination!
<hr>
</td></tr>
</table>
<!-- Demonstration -->
<center>
<form name=encryptform>
<table>
<tr>
<td align=center>Original String</td>
<td>&nbsp;</td>
<td align=center>Encrypted Code</td>
</tr>
<tr>
<td align=center><input name=input type=text size=40 value="JavaScript Source"></td>
<td align=center>
<input type=button value="<--" onClick="javascript:num_to_str(this.form)"><br>
<input type=button value="-->" onClick="javascript:str_to_num(this.form)">
</td>
<td align=center><input name=output type=text size=40></td>
</tr>
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</form>
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<a name="source">
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<tr><td BGCOLOR=yellow><font FACE="helvetica,arial,geneva"><b>JavaScript Source Code 3000:  Password Protection:  Character Encoder</b>
<p>Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Apple-s).  The script is yours!!!
<br><br></font></td></tr>
<tr><td BGCOLOR=yellow ALIGN=CENTER>
<form NAME="copy">

<DIV align="center">
<input type=button value="Highlight All" onClick="javascript:this.form.txt.focus();this.form.txt.select();">&nbsp;&nbsp;&nbsp;&nbsp;
<INPUT TYPE="text" NAME="total" VALUE="Script Size:  1.86 KB" size=24>
</DIV>

<textarea NAME="txt" ROWS=20 COLS=75 WRAP=VIRTUAL>

&lt;!-- TWO STEPS TO INSTALL CHARACTER ENCODER:

  1.  Copy the coding into the HEAD of your HTML document
  2.  Add the last code into the BODY of your HTML document  --&gt;

&lt;!-- STEP ONE: Paste this code into the HEAD of your HTML document  --&gt;

&lt;HEAD&gt;

&lt;SCRIPT LANGUAGE="JavaScript"&gt;
&lt;!-- Original:  Mike McGrath (mike_mcgrath@lineone.net) --&gt;
&lt;!-- Web Site:  http://website.lineone.net/~mike_mcgrath/ --&gt;

&lt;! &gt;
&lt;! &gt;

&lt;!-- Begin
var str_in;
var str_out = ""; 
var num_in;
var num_out = "";
var e = "Enter Text!";

function str_to_num(form) {
num_out = "";
if(form.input.value == "") alert(e);
else {
str_in = escape(form.input.value);
for(i = 0; i &lt; str_in.length; i++) {
num_out += str_in.charCodeAt(i) - 23;
}
form.output.value = num_out;
form.input.value = "";
   }
}

function num_to_str(form) {
str_out = "";
if(form.output.value == "") alert(e)
else {
num_out = form.output.value;  
for(i = 0; i &lt; num_out.length; i += 2) {
num_in = parseInt(num_out.substr(i,[2])) + 23;
num_in = unescape('%' + num_in.toString(16));
str_out += num_in;
}
form.input.value = unescape(str_out);
form.output.value = "";
   }
}
//  End --&gt;
&lt;/script&gt;
&lt;/HEAD&gt;

&lt;!-- STEP TWO: Copy this code into the BODY of your HTML document  --&gt;

&lt;BODY&gt;

&lt;center&gt;
&lt;form name=encryptform&gt;
&lt;table&gt;
&lt;tr&gt;
&lt;td align=center&gt;Original String&lt;/td&gt;
&lt;td&gt;&nbsp;&lt;/td&gt;
&lt;td align=center&gt;Encrypted Code&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td align=center&gt;&lt;input name=input type=text size=40 value="JavaScript Source"&gt;&lt;/td&gt;
&lt;td align=center&gt;
&lt;input type=button value="&lt;--" onClick="javascript:num_to_str(this.form)"&gt;&lt;br&gt;
&lt;input type=button value="--&gt;" onClick="javascript:str_to_num(this.form)"&gt;
&lt;/td&gt;
&lt;td align=center&gt;&lt;input name=output type=text size=40&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/form&gt;
&lt;/center&gt;

 

&lt;!-- Script Size:  1.86 KB --&gt;</textarea><br><font FACE="helvetica,arial,geneva"></font></td></tr>

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